What? It's minimal effort. 'Found' a gmail address? Drop everything after the + sign. Spammers spend a lot of processing time on their emails (e.g. testing the

What? It's minimal effort. 'Found' a gmail address? Drop everything after the + sign. Spammers spend a lot of processing time on their emails (e.g. testing them against spam filters to tweak them to get through), so this extra step is so small as to be insignificant.