Thought I was quite good at noting my sources, but somehow I always miss inputting something.
Lost Cousins is completely free* this weekend (and ancestry's UK census records - registration required) so it's a good opportunity to add a few more relations, and some of the Runciman and Fairbairn families from the One Name Study and DNA project that we don't yet know where they "fit".
The very first one I went to enter from my data, I had to re-check the census entry concerned as I'd not noted all of the information necessary to enter them on Lost Cousins. At least one of the objectives of citing your sources was met, being able to find the entry again easily.
* the basic site has always been free, it is the additional contacting of relations found via the census records you have input that is also free this weekend.