The expansion of open and distributed learning over the past two decades has been accompanied by a parallel evolution in how learners connect with one another, with instructors, and with the broader networks of knowledge that surround formal coursework. Social networking technologies and practices, once treated as peripheral to the core business of instruction, now sit close to the center of how many open and distributed learning environments function — shaping how learners form communities, sustain motivation across the isolating stretches of self-paced study, and construct knowledge collaboratively rather than in isolation. This issue brings together research that takes this shift seriously, examining social networking not as an add-on feature of online courses but as a structural element that shapes the learning experience itself.

The contributions gathered in this issue converge on several interrelated themes. A first cluster of work examines the pedagogical design of networked learning environments, asking how course architecture, platform choice, and facilitation strategy shape the quality and durability of learner-to-learner interaction. A second cluster turns to the question of social presence, investigating how learners experience connection and belonging — or its absence — in environments that lack the face-to-face cues of a traditional classroom, and how social presence relates to persistence and motivation in massive open online courses (MOOCs) and other large-scale open formats. A third cluster addresses the use of social media and third-party collaborative platforms as informal extensions of formal open education, exploring both the pedagogical opportunities and the equity concerns that arise when learning migrates onto commercial platforms not designed with education in mind.

Running beneath each of these themes is a shared concern with equity and access: several contributions in this issue examine how uneven access to devices, connectivity, digital literacy, and time shapes who is able to participate fully in the networked dimensions of open learning, and what this means for the promise of openness as a vehicle for educational equity.

This issue extends a body of scholarship that has, over the past decade, moved from treating online learner interaction as a matter of technical feature design toward a more sociologically and pedagogically grounded understanding of networked learning as a social and cultural practice. Where earlier research often asked whether discussion forums or social media integration improved measurable outcomes, the contributions here tend to ask more structural questions: how are learning networks formed and sustained over time, what forms of capital and access do they presuppose, and how might their design be rethought to serve a wider range of learners.

Taken together, the articles in this issue suggest that the future of research on social networking in open and distributed learning lies less in demonstrating that networked interaction matters — a point increasingly well established — and more in understanding the conditions under which it functions well, for whom, and at what cost. The editors hope this issue will prompt further inquiry into the design, equity, and long-term sustainability of social learning networks as open and distributed education continues to grow in scale and reach.