Brendac1 - we opened up our indexing tools to EYB members in 2011 as many members wanted books they owned indexed, but they were not owned by enough members to feature on our indexing chart. Our indexing chart lists books by the number of Bookshelves they are on plus the number of index requests they have received from members. We have been blown away by how many members have taken it up. 30% of the cookbooks indexed are now done by members. We do proofread all the indexes, as the quality of the data is very important to us. Though we have some member indexers who have indexed so many of their books (over 100 in some cases) that their indexing is as good as our professional indexers so no longer requires any proofreading.
As CreativeJuices explained, indexing isn't for everyone as it does require attention to detail. But you do get to know the cookbook very well when you index it. And you have the final benefit of the recipes now being included in your searches. We suggest for new member indexers that they start with a short, simple cookbook so they can see if this is something they enjoy. Our Data Manager, Deborah, does hand-holding at the start, reviewing the first 10 or so recipes indexed to check there aren't fundamental misunderatandings of the indexing rules - or whether the indexing manual has not been read at all, as we suspect has sometimes been the case. When the index is finished, Sydney proofreads it, corrects any mistakes and gives feedback to the member, so when they index another cookbook (as we hope they will) mistakes aren't repeated.