Multiple websites or building a brand
When it comes to advertising on the web you might consider to split your business offering over several websites. This does give better SEO results for each niche keywords but it weakens your brand and brand searches. It might be better to put all your offerings on one website. For example we offer web design, graphic design, SEO and Google AdWords management but we try to place all these services on one website rather than weaken the brand. Having one large website with all your content on is better than having lots of websites.