Do you use the services of professional writers?
If you don't, it's probably costing you a lot of lost fundraising revenue.
I realize that may be self-serving for me to say, but it's true. Professional writers do something that regular people -- even very smart regular people -- can't do.
Here's how the Bad Language Blog puts it, at Why marketing professionals need professional writers:
Effective copywriting is more than just stringing syntactically correct sentences together. It's about distilling the features of your product or service into benefits that your customers care about and finding the right style and tone of voice to get the message across.
What an excellent professional writer can do is virtually magic. If you're getting your writing from someone smart and amiable who's willing to write -- you're missing the magic.
Professional writers: Make sure you keep earning the badge of professional writer. Don't let your writing devolve to syntactically correct sentences. You aren't worth the trouble and money otherwise.