Use clean backgrounds. The background textures and color you choose have the ability to drastically affect the overall appeal of the website. Lots of texture and graphics in the background can be distracting. If you are going to use a color on the background, you should make sure there is significant contrast between the background color and the text. Be careful when using brighter and darker colors such as red or yellow. They cause visual fatigue (temporary loss of strength and energy resulting from hard physical or mental work) and the reader will lose their focus on the text.
When would this be useful? If your site has a blog with public commenting turned on, links within those comments could pass your reputation to pages that you may not be comfortable vouching for. Blog comment areas on pages are highly susceptible to comment spam. Nofollowing these user-added links ensures that you're not giving your page's hard-earned reputation to a spammy site.
Influencers: Government Contracting Officers, Other GovCon (Government Contracting) consultants, Sellers of professional services for small businesses (certain CPAs, bonding companies, financial institutions, contract attorneys), large contracting firms (who need to hire small business subcontractors), Union/trade organizations, Construction and Engineering trade publications
Dig deep into everything you ever needed to know about links from anchor text to redirection. Read this series of pages to understand how and when to use nofollow and whether guest blogging is actually dead. If you're more into the link building side of things (working to improve the rankings on your site by earning links), go straight to the Beginner's Guide to Link Building.
If you're looking to upload an image to a blog post, for example, examine the file for its file size first. If it's anywhere in megabyte (MB) territory, even just 1 MB, it's a good idea to use an image compression tool to reduce the file size before uploading it to your blog. Sites like TinyPNG make it easy to compress images in bulk, while Google's very own Squoosh has been known to shrink image file sizes to microscopic levels.