The fiscal sponsor must be a 501(c)(3) organization as recognized by the IRS. The fiscal sponsor cannot be an organization whose tax-exempt status is pending. The sponsored project must be able to qualify for exemption under section 501(c)(3), even if the project has no intention of ever applying for it.
Pressing the Ignore button on the listed invitation on the LinkedIn site is effectively a soft rejection. The message then moves to your Archived folder. You can later choose to open the message again and accept the request.
LinkedIn, however, is a bit of a different story. If a potential employer sees something cringe-worthy on your profile, well, you may have just lost a job opportunity. Here are some examples of what not to include on your profile so you can avoid this situation. 1. LOL OMG!. Things like this may be okay for Facebook, but they're definitely not LinkedIn-appropriate.