Do people create and use Web Parts connections?

I've been writing some SharePoint web parts which connect (as providers and consumers). I've found many difficulties, and (comparatively*) little material from the web, from books, or from microsoft.com, which is quite surprising as Web Parts have been around since 2003. This is making me think that although web part connections look like a first class feature in SharePoint, that in practice few people write connecting web parts, and few SharePoint users use them.

Is this the case - that few de开发者_JS百科velopers write connecting web parts, and few users use them?

*comparitively: A subjective impression. With each specific problem i usually find only a handful of web pages which address it, and as my problems seem to be fundamental ones (such as which data type to wrap in an IWebPartRow), I expect a lot more search results.

I very rarely do anything with web part connections for a couple reasons...

1. Like you mention above, there is little documentation and overall they are kind of painful to implement
2. Our users generally are not configuring the web parts (and therefore never configuring the web part connections). Plus they would find the connections interface confusing.