Japanese Linked Verse
Actually, linked verse in English, by British elementary school students under the direction of John Carley, with plenty of examples.
LYNX - A Journal for Linking Poets
Index to Jane and Werner Reichhold's (now) online magazine of linked poetry and tanka, with related articles. (Does not duplicate material on her "Renga" site, which see.)
REN: The mechanism of linking in Japanese culture
Text of a talk given by Yuko Tanaka, of Hosei University in Tokyo, in 1993 at the Nissan Institute, Oxford University. Discusses the concept of linking, with special emphasis on linked poetry of Basho.
Renga
The highly idiosyncratic world of linked poetry according to Jane Reichhold.
Renga and Other Linked Verse
Access to linked poems by Mark Alan Osterhaus and friends, including a well done kasen (36-stanza) renku by Osterhaus, Paul MacNeil, and A.C. Missias
Renku Home
Articles on renku--Japanese-style linked poems. Includes an extensive bibliography and English/Japanese season word list. Maintained by William J. Higginson.