Morning commuters at my central London rail terminus are subjected to running the gauntlet in the following order:
1 - Charity collectors - about twice a month there will be a team with buckets for cash donations - always good causes
2 - Brand marketers releasing a new product will do give-away free samples of brekafast bars etc - popular with most people grabbing freebies
3 - Free morning newspapers being handed out - ignore
4 - Authorised homeless man selling Big Issue magazine - ignore
5 - various unauthorised beggars - ignore
6 - JW's with cart - ignore
They are just another annoying obstacle which most people are visually filtering - it might be different at quieter locations - in Central London 99.99% of people stream past them without a glance.