Just a FYI - What that website was referring to were the special passive loss limitations if you are filing as Married Filing Jointly and are an active participate with rental property. The special passive loss limitation is $25,000 and is reduced if your MFJ AGI is over $100,000.
This is described in IRS Publication 925, Passive Activity and At-Risk Rules starting on page 4 of the publication - https://www.irs.gov/pub/irs-pdf/p925.pdf
