From reading the forums BRIEFLY, something like say "||qrst.facebook.com" may exist in multiple subscribed filters.
I --suspect-- duplicates add a processing delay time/memory size burden for Adblock users.
If not already implemented, could some kind of "summary list" be made & acted on by Adblock where the summary list eliminates exact duplicates as it is being created/appended with each individual filter subscription. This list need not be visible to the individual user, but if someone considers it a worthwhile feature, bonus. "Nearly duplicate" or 'functionally duplicate" like abcd.com^ & bcd.com^ might be taken care of by bcd.com^, the added programming burden for this would be --much-- larger than direct duplicates.
I was thinking about doing this manually by copy/paste/rid duplicates... but this is tedious for individual users to implement, particularly on an ongoing basis .
Please note, that I cannot verify duplicates exist in quantities large enough or the software/user burden from multiple duplicates are large enough that the "additions" benefit/greater good justifies the time & effort of the programmers.
Thank you to all who have contributed to the development & support of the wonderful Adblock software plug-in!
