Family history research
I started this around the time of the release of the 1901 census on the WWW. Since then it has become increasingly easy to locate data. However, there are several family members whose interest and care in preserving documents and artefacts have made my research much more interesting and rewarding.
Even after 15 years of continuous research I am still discovering previously unknown family members, some as close as second cousins. Doubtless the task will never be complete.