I might have said there would be no harm normally, but after a client came to me to find out why a .co.uk was appearing above the .com, which was his main site, I would say it can do harm. The .co.uk was simply being pointed to the .com. First time I have seen this happen so just tread carefully. Either way, it's a too grey hat for my liking - to try and get more search traffic by trying to mis-lead people from one domain to another is a no-no. Just tell them that with all of the algo changes going on, they are best scratching that idea and focusing their efforts on great content. If that got found out (and it can very easily if someone reports it) then all domains will be penalised.

First, tread carefully with Business.com as I know of companies that pulled out of there after Panda hit them and reports that they had seen a drop in terms of rank. Basically, if you are going for generic directories, try and find ones in your niche.

As for which service to use, I don't actually use PR services myself so can't offer any real input here, but do hear good things about PRWeb.

One thing to also remember, if you are looking to build backlinks, you need to diversify, but not to the point where the site has no meaning to your industry. For example, you could quite happily look for blogs and sites that sell fitness equipment, fitness food, bikes, climbing equipment and even diet websites - it is all related at some level and Google will know this.

You might be surprised just what you can turn up.

Andy

To be honest, I don't know anyone who has bad things to say about Screaming Frog - aside from the cost, but as you said, really worth it.

However, it is free for up to 500 page crawl limit, so perhaps give it a go?

Andy

Screaming Frog Spider does a pretty good job...

As simple as enter the URL and leave it to report back when completed.

Andy