A couple of blogs I've found about people trying things with the Flickr.Net API recently...
Flickr.Net and LINQ
LINQ is a new set of APIs from Microsoft for .Net Framework 2.0. It adds a load of really cool language extensions to both C# and VB.Net. Some of these extensions are taken from common dynamic languages like LISP and will really improve peoples productivity I think. Hopefully I'll write up my review of LINQ from the developer day conference later.
This blog post (remobjects.com) talks about using LINQ with the Flickr.Net API - which apparently is being done now in a real live website which is built using Chrome(I think its an Object Pascal compiler for .Net).
Flickr.Net and Avalon
The Windows Presentation Foundation (formerly know as Avalon) is used with Flickr.Net in this blog post (Pavan Podilia's Blog) to create a fairly simple, but nice looking application.
Flickr.Net and C
A port of the PHP based Flickr Photo Finder into C# is the basis of this blog post: J Wynia.
[tags]flickr, flickrapi, flickrdotnet, .net, linq, avalon, wpf[/tags]