Just to chime in on a couple notes here.
The owner of iHerp and I have talked shop in depth numerous times (actually on a telephone... <gasp>) and have a good relationship with each other. To my knowledge, he has no intention of ever charging for the tracking features that are on the site at this time. Also, as far as the security, rest assured that he is meticulous about the security of the site and an all around stand up guy.
Reguarding the comment about bulk tracking in Degei, it has been available for several years, however, animals are not "grouped", you just have to put a check mark on the ones you want to select for the "bulk" activity and click ok, to post it to all of the selected animals. Here is the screen: http://www.eyehit.com/degeihelp/advanced/bulk.htm

Lastly, as noted, whatever you use, BACK UP YOUR DATA REGULARLY! and that doesn't just mean to file on your computer, that means every so often you should burn a cd of it or use a flash drive if you want to be secure.